Abstract: In order to detect the concrete penetration more accurately, electrical resistance tomography (ERT) technology is used to test the designed concrete penetration test block. Through the developed image evaluation module and the analysis of the experimental results by considering subjective and objective factors, it can be concluded that the ERT method can visualize the concrete penetration status and qualitatively analyze the penetration area. It shows that this research can provide a new vision and method for concrete penetration nondestructive testing technology.